| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |
| #define COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |
| |
| #include <string> |
| |
| #include "base/memory/aligned_memory.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/render_tree/font.h" |
| #include "cobalt/render_tree/font_provider.h" |
| #include "cobalt/render_tree/image.h" |
| #include "cobalt/render_tree/resource_provider.h" |
| |
| namespace cobalt { |
| namespace render_tree { |
| |
| // The ResourceProvider defined in this file provides a bare minimum of |
| // implementation necessary. It is useful for tests that do not care about |
| // actually rasterizing render trees. For certain resources like Images, |
| // it provides introspection of internal pixel data so that tests can check |
| // that images do indeed contain the data they are expected to contain. |
| |
| // Simple in-memory pixel data. |
| class ImageDataStub : public ImageData { |
| public: |
| ImageDataStub(const math::Size& size, PixelFormat pixel_format, |
| AlphaFormat alpha_format) |
| : descriptor_(size, pixel_format, alpha_format, |
| size.width() * BytesPerPixel(pixel_format)), |
| memory_(new uint8[static_cast<size_t>(size.height() * |
| descriptor_.pitch_in_bytes)]) {} |
| |
| const ImageDataDescriptor& GetDescriptor() const OVERRIDE { |
| return descriptor_; |
| } |
| |
| uint8* GetMemory() OVERRIDE { return memory_.get(); } |
| |
| private: |
| ImageDataDescriptor descriptor_; |
| scoped_array<uint8> memory_; |
| }; |
| |
| // Simply wraps the ImageDataStub object and also makes it visible to the |
| // public so that tests can access the pixel data. |
| class ImageStub : public Image { |
| public: |
| explicit ImageStub(scoped_ptr<ImageDataStub> image_data) |
| : image_data_(image_data.Pass()) {} |
| |
| const math::Size& GetSize() const OVERRIDE { |
| return image_data_->GetDescriptor().size; |
| } |
| |
| ImageDataStub* GetImageData() { return image_data_.get(); } |
| |
| private: |
| ~ImageStub() OVERRIDE {} |
| |
| scoped_ptr<ImageDataStub> image_data_; |
| }; |
| |
| // Simple class that returns dummy data for metric information. |
| class FontStub : public Font { |
| public: |
| explicit FontStub(const scoped_refptr<Typeface>& typeface) |
| : typeface_(typeface) { |
| FontMetrics font_metrics = GetFontMetrics(); |
| glyph_bounds_ = |
| math::RectF(0, 0, 1, font_metrics.ascent() + font_metrics.descent()); |
| } |
| |
| TypefaceId GetTypefaceId() const OVERRIDE { return typeface_->GetId(); } |
| |
| FontMetrics GetFontMetrics() const OVERRIDE { |
| return FontMetrics(10, 5, 3, 6); |
| } |
| |
| GlyphIndex GetGlyphForCharacter(int32 utf32_character) OVERRIDE { |
| return typeface_->GetGlyphForCharacter(utf32_character); |
| } |
| |
| const math::RectF& GetGlyphBounds(GlyphIndex glyph) OVERRIDE { |
| UNREFERENCED_PARAMETER(glyph); |
| return glyph_bounds_; |
| } |
| |
| float GetGlyphWidth(GlyphIndex glyph) OVERRIDE { |
| UNREFERENCED_PARAMETER(glyph); |
| return 1; |
| } |
| |
| private: |
| ~FontStub() OVERRIDE {} |
| |
| const scoped_refptr<Typeface> typeface_; |
| math::RectF glyph_bounds_; |
| }; |
| |
| // Simple class that returns dummy data for metric information. |
| class TypefaceStub : public Typeface { |
| public: |
| explicit TypefaceStub(const void* data) { UNREFERENCED_PARAMETER(data); } |
| |
| TypefaceId GetId() const OVERRIDE { return 0; } |
| |
| uint32 GetEstimatedSizeInBytes() const OVERRIDE { return 256; } |
| |
| scoped_refptr<Font> CreateFontWithSize(float font_size) OVERRIDE { |
| UNREFERENCED_PARAMETER(font_size); |
| return make_scoped_refptr(new FontStub(this)); |
| } |
| |
| GlyphIndex GetGlyphForCharacter(int32 utf32_character) OVERRIDE { |
| UNREFERENCED_PARAMETER(utf32_character); |
| return GlyphIndex(1); |
| } |
| |
| private: |
| ~TypefaceStub() OVERRIDE {} |
| }; |
| |
| class RawImageMemoryStub : public RawImageMemory { |
| public: |
| typedef scoped_ptr_malloc<uint8_t, base::ScopedPtrAlignedFree> ScopedMemory; |
| |
| RawImageMemoryStub(size_t size_in_bytes, size_t alignment) |
| : size_in_bytes_(size_in_bytes) { |
| memory_ = ScopedMemory( |
| static_cast<uint8_t*>(base::AlignedAlloc(size_in_bytes, alignment))); |
| } |
| |
| size_t GetSizeInBytes() const OVERRIDE { return size_in_bytes_; } |
| |
| uint8_t* GetMemory() OVERRIDE { return memory_.get(); } |
| |
| private: |
| ~RawImageMemoryStub() OVERRIDE {} |
| |
| size_t size_in_bytes_; |
| ScopedMemory memory_; |
| }; |
| |
| // Return the stub versions defined above for each resource. |
| class ResourceProviderStub : public ResourceProvider { |
| public: |
| ~ResourceProviderStub() OVERRIDE {} |
| |
| void Finish() OVERRIDE {} |
| |
| bool PixelFormatSupported(PixelFormat pixel_format) OVERRIDE { |
| UNREFERENCED_PARAMETER(pixel_format); |
| return true; |
| } |
| |
| bool AlphaFormatSupported(AlphaFormat alpha_format) OVERRIDE { |
| UNREFERENCED_PARAMETER(alpha_format); |
| return true; |
| } |
| |
| scoped_ptr<ImageData> AllocateImageData(const math::Size& size, |
| PixelFormat pixel_format, |
| AlphaFormat alpha_format) OVERRIDE { |
| return scoped_ptr<ImageData>( |
| new ImageDataStub(size, pixel_format, alpha_format)); |
| } |
| |
| scoped_refptr<Image> CreateImage(scoped_ptr<ImageData> source_data) OVERRIDE { |
| scoped_ptr<ImageDataStub> skia_source_data( |
| base::polymorphic_downcast<ImageDataStub*>(source_data.release())); |
| return make_scoped_refptr(new ImageStub(skia_source_data.Pass())); |
| } |
| |
| scoped_ptr<RawImageMemory> AllocateRawImageMemory(size_t size_in_bytes, |
| size_t alignment) OVERRIDE { |
| return scoped_ptr<RawImageMemory>( |
| new RawImageMemoryStub(size_in_bytes, alignment)); |
| } |
| |
| scoped_refptr<Image> CreateMultiPlaneImageFromRawMemory( |
| scoped_ptr<RawImageMemory> raw_image_memory, |
| const MultiPlaneImageDataDescriptor& descriptor) OVERRIDE { |
| UNREFERENCED_PARAMETER(raw_image_memory); |
| UNREFERENCED_PARAMETER(descriptor); |
| return scoped_refptr<Image>(); |
| } |
| |
| bool HasLocalFontFamily(const char* font_family_name) const OVERRIDE { |
| UNREFERENCED_PARAMETER(font_family_name); |
| return true; |
| } |
| |
| scoped_refptr<Typeface> GetLocalTypeface(const char* font_family_name, |
| FontStyle font_style) OVERRIDE { |
| UNREFERENCED_PARAMETER(font_family_name); |
| UNREFERENCED_PARAMETER(font_style); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<render_tree::Typeface> GetLocalTypefaceByFaceNameIfAvailable( |
| const std::string& font_face_name) OVERRIDE { |
| UNREFERENCED_PARAMETER(font_face_name); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<Typeface> GetCharacterFallbackTypeface( |
| int32 utf32_character, FontStyle font_style, |
| const std::string& language) OVERRIDE { |
| UNREFERENCED_PARAMETER(utf32_character); |
| UNREFERENCED_PARAMETER(font_style); |
| UNREFERENCED_PARAMETER(language); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<Typeface> CreateTypefaceFromRawData( |
| scoped_ptr<RawTypefaceDataVector> raw_data, |
| std::string* error_string) OVERRIDE { |
| UNREFERENCED_PARAMETER(raw_data); |
| UNREFERENCED_PARAMETER(error_string); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| float GetTextWidth(const char16* text_buffer, size_t text_length, |
| const std::string& language, bool is_rtl, |
| FontProvider* font_provider, |
| FontVector* maybe_used_fonts) OVERRIDE { |
| UNREFERENCED_PARAMETER(text_buffer); |
| UNREFERENCED_PARAMETER(language); |
| UNREFERENCED_PARAMETER(is_rtl); |
| UNREFERENCED_PARAMETER(font_provider); |
| UNREFERENCED_PARAMETER(maybe_used_fonts); |
| return static_cast<float>(text_length); |
| } |
| |
| // Creates a glyph buffer, which is populated with shaped text, and used to |
| // render that text. |
| scoped_refptr<GlyphBuffer> CreateGlyphBuffer( |
| const char16* text_buffer, size_t text_length, |
| const std::string& language, bool is_rtl, |
| FontProvider* font_provider) OVERRIDE { |
| UNREFERENCED_PARAMETER(text_buffer); |
| UNREFERENCED_PARAMETER(language); |
| UNREFERENCED_PARAMETER(is_rtl); |
| UNREFERENCED_PARAMETER(font_provider); |
| return make_scoped_refptr( |
| new GlyphBuffer(math::RectF(0, 0, static_cast<float>(text_length), 1))); |
| } |
| |
| // Creates a glyph buffer, which is populated with shaped text, and used to |
| // render that text. |
| scoped_refptr<GlyphBuffer> CreateGlyphBuffer( |
| const std::string& utf8_string, |
| const scoped_refptr<Font>& font) OVERRIDE { |
| UNREFERENCED_PARAMETER(font); |
| return make_scoped_refptr(new GlyphBuffer( |
| math::RectF(0, 0, static_cast<float>(utf8_string.size()), 1))); |
| } |
| }; |
| |
| } // namespace render_tree |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |